Method of forming a sinuous spring strip



June 29, 1965 J. c. HAMPSON METHOD OF FORMING A SINUOUS SPRING STRIP 25Sheets-Sheet 1 Original Filed June 12. 1955 INVENTOR (/0101 C MvMPw vATTORNEY \5 M W M June 29, 1965 J. c. HAMPSON 3,

METHOD OF FORMING A snwous SPRING STRIP Original Filed June 12, 1 23Sheets-Sheet 2 June 29, 1965 J. c. HAMPSON I METHOD OF FORMING A SINUOUSSPRING STRIP Original Filed June 12. 956

23 Sheets-Sheet 5 ATTORNEY S June 29, 1965 J. c. HAMPSON METHOD OFFORMING A SINUOUS SPRING STRIP 23 Sheets$heet 4 Original Filed June 12.1956 INVENTOR (Amy C //4M .so/v

June 29, 1965 .1. c. HAMPSON METHOD OF FORMING A SINUOUS SPRING STRIP 23Sheets-Sheet 5 Original Filed June 12, 1956 INVENTOR /o//v 6 411mmATTORNEYS June 29, 1965 Original Filed June 12, 1956 J. C. HAMPSONMETHOD OF FORMING A SINUOUS SPRING STRIP 25 Sheets-Sheet 7 IN VENTOR/w,w 6%4/P50n/ ATTORNEYS J. C. HAMPSON METHOD OF FORMING A SINUOUSSPRING STRIP Original Filed June 12, 1956 June 29, 1965 23 Sheets-Sheet8 M QMWM ATTORNEY June 29, 1965 J. c. HAMPSON METHOD OF FORMING ASINUOUS SPRING STRIP Original Filed June 12, 1956 23 Sheets-Sheet 9 9iii- INVENTOR (AW/v A/FJWN ATTORNEYS June 29, 1965 J. c. HAMPSON METHODOF FORMING A SINUOUS SPRING STRIP 23 Sheets-Sheet 12- Original FiledJune 12, 1956 ATTORNEYS M mm M Z W 6. d W -1 M June 29, 1965 J. c.HAMPSON METHOD OF FORMING A smuqus srnxneswmr Original Filed June 12.1956 25 Sheets-Sheet 13 INVENTOR Jaw 5 //MPJ0- ATTORN YS June 29, 1965J. c. HAMPSON 3,191,636

METHOD OF FORMING A SINUOUS SPRING STRIP Original Filed June 12. 1956 23Sheets-Sheet l4 \W'INVENTQR c/omv C AQWPJM MWWM ATTORNEYS INVENTORMOI/IV $071 .50

23 Sheets-Sheet 15 J. C. HAMPSON METHOD OF FORMING A SINUOUS SPRINGSTRIP Original Filed June' 12. 1956 June 29, 1965 ATTORNEYS June 29,1965 J. c. HAMPSON 3,191,536

METHOD OF FORMING A SINUOUS SPRING STRIP Original Filed June 12, 1956 25Sheets-Sheet 16 INVENTOR ATTORNEY 5 June 29, 1965 J. c. HAMPSON METHODOF FORMING A smuous SPRING sum 23 Sheets-Sheet 17 Original Filed June12, 1956 ATTORNEY-$ June 29, 1965 J. c. HAMPSON METHOD OF FORMING ASINUOUS SPRING STRIP Original Filed June 12, 1956 23 SheetsSheet 18INVENTOR Jaw C AnPs v June 29, 1965 J. c. HAMPSON 3,191,536

METHOD OF FORMING A SINUOUS SPRING STRIP Original Filed June 12, 1956 25Sheets-Sheet l9 INVENTOR ATTORNEYS June 29, 1965 J. C. HAMPSON METHOD OFFORMING A SINUOUS SPRING STRIP Original Filed June 12, 1956 25Sheets-Sheet 2 0 INVENTOR Jaw C fi m sorv ATTORNEY-5

1. A METHOD OF FORMING A SINUOUS SPRING STRIP IN WHICH ALTERNATESUCCESSIVE SEGMENTS ARE TORSION BARS AND SPACER BARS FROM ASUBSTANTIALLY STRAIGHT WIRE OF PRE-DETERMINED LENGTH SUBSTANTIALLY EQUALTO THE WIRE LENGTH OF THE FINISHED SPRING STRIP COMPRISING THE STEPS OFRESTRAINING A PLURALITY OF SUCCESSIVE SPACED PORTIONS OF SAID WIRE EQUALIN LENGTH TO THE SUCCESSIVE TORSION BARS OF SAID SPRING STRIP, EACHADJACENT PAIR OF SAID RESTRAINED WIRE PORTIONS BEING SPACED APART ALONGSUCH WIRE A DISTANCE EQUAL TO THE LENGTH OF THE SPACER BAR OF SAIDSPRING STRIP BETWEEN THE TORSION BARS TO WHICH SUCH PAIR OF RESTRAINEDPORTIONS CORRESPOND, THE PORTIONS OF SAID STRIP BETWEEN SAID RESTRAINEDPORTIONS BEING UNSUPPORTED AND SIMULTANEOUSLY FOLDING ALTERNATE ONES OFSAID RESTRAINED PORTIONS IN OPPOSITE DIRECTIONS IN A COMMON PLANE INTOSUBSTANTIALLY MUTUALLY PARALLEL RELATION AND MORE CLOSELY LONGITUDINALLYCONGREGATING SAID RESTRAINED PORTIONS TO MAINTAIN SAID WIRESUBSTANTIALLY FREE OF TENSION AND UNSUPPORTED PORTIONS OF SAID WIRESTRIP BEING SHIFTED LATERALLY OF THE AXIS OF SAID WIRE STRIP WITHOUTSUBSTANTIAL DEFORMATION WHILE SAID RESTRAINED PORTIONS ARE FOLDED.